i have tested all sdl2 build and last sdl1build , but , on my g5 they don't work rom scan fail or/and frontend/gui doesn't work so i have decide to compile it from source !on mac intel compile work like a charm !!! you need to write only make , but on g5 it seems impossible

You can try with GCC 6.3 instead, the build process goes a bit further but again it stops when c++ libraries are invoked. Also an SDL2 library for OSX PPC never officially existed, the best you can have is to build a universal binary (PPC/x86) of 2.0.1 and then using it in your projects. The link you posted above point to a intel-only SDL2 library, useless with PowerMacs. If you search a bit in the place where you have found the 0.168 PPC binary you should found also a working PPC SDL2 library to use in your projects.

Good luck and if you succeed in building a working OSX PPC binary of SDLmame please share it with us :-)

You can try with GCC 6.3 instead, the build process goes a bit further but again it stops when c++ libraries are invoked. Also an SDL2 library for OSX PPC never officially existed, the best you can have is to build a universal binary (PPC/x86) of 2.0.1 and then using it in your projects. The link you posted above point to a intel-only SDL2 library, useless with PowerMacs. If you search a bit in the place where you have found the 0.168 PPC binary you should found also a working PPC SDL2 library to use in your projects.

Good luck and if you succeed in building a working OSX PPC binary of SDLmame please share it with us :-)

The tricky part seem to be the build of universal (x86/ppc32) libcxx libraries that still require an intel Mac but once trasferred they should work fine on PPC machines. I have not tried myself but it seems possible.

The tricky part seem to be the build of universal (x86/ppc32) libcxx libraries that still require an intel Mac but once trasferred they should work fine on PPC machines. I have not tried myself but it seems possible.